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Opensnitch: init at 1.0.0b and provide NixOS module #76897

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@timor timor commented Jan 3, 2020

Motivation for this change

Opensnitch seems to be a useful personal firewall application to control (at the moment only outgoing) connections per process/user/destination.
See also: #76610

Things done

The package provides two attributes, the daemon opensnitchd and the UI program opensnitch-ui, which are built from the same source.

Additionally, a NixOS module is provided which starts the daemon as a system service, and (default behavior) runs the UI process in each user's graphical session as a user service.

Some support is added for generating some predefined rules, as e.g. per-process rules, which have been created via the UI prompt, become obsolete if the store path to a program changes.


  • Had some problems trying to put the socket file under /run/..., so it currently resides under the default /tmp

  • Permissions of log files, socket file and rules files could be wrong

  • Upstream uses version 1.0.0b, but there seems to be no definitive release. Since upstream also advertises this as unstable, I added the commit date to the version number

  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)

  • Built on platform(s)

    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)

  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"

  • Tested execution of all binary files (usually in ./result/bin/)

  • Determined the impact on package closure size (by running nix path-info -S before and after)

  • Ensured that relevant documentation is up to date

  • Fits


  • Developed and tested the package and the module on 19.09
  • Only tested evaluation on master
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@adisbladis adisbladis commented Jan 3, 2020

Opensnitch is not maintained, it also does not yet have a tagged release (not even a beta release).
I don't think it belongs in Nixpkgs.

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@timor timor commented Jan 7, 2020

There is a fork which aimed to stabilize a version recently (end of 2019). I'll see how that works. If it makes sense, I will open a new PR.

@timor timor closed this Jan 7, 2020
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@onny onny commented Jul 17, 2020

There is a fork which aimed to stabilize a version recently (end of 2019). I'll see how that works. If it makes sense, I will open a new PR.

That would be great! There's already a stable version 1.0 Looks really well maintained!

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